Article
Mechanism of Radical Formation in the H-Bond Network of D1-Asn298 in Photosystem II.
Biochemistry - 21 Aug 2018
Kawashima Keisuke, Saito Keisuke, Ishikita Hiroshi
Abstract excerpt
In photosystem II (PSII), redox-active tyrosine Z (TyrZ) forms a low-barrier H-bond with Nε of D1-His190. The PSII crystal structures show that Nδ of D1-His190 donates an H-bond to the carbonyl O of D1-Asn298. However, at a level of ∼2 Å resolution, a clear discrimination between the -NH2 and -C═O groups of the asparagine side chain may not be possible based on the electron density map. Using quantum...
Read the complete abstract on PubMedTopics
Share this publication in a Topic to start or enrich a Post.